Home / 1,438,747.80-2,158,121.70-1,377,317.40

Finding the Fourth Proportional to 1,438,747.80, 2,158,121.70 and 1,377,317.40

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Solution

The fourth proportional to 1,438,747.80, 2,158,121.70 and 1,377,317.40 is: 2,065,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,747.80 : 2,158,121.70 = 1,377,317.40 : x
  2. Step 2: Convert to fraction form
    1,438,747.80/2,158,121.70 = 1,377,317.40/x
  3. Step 3: Cross multiply
    1,438,747.80x = 2,158,121.70 × 1,377,317.40
  4. Step 4: Simplify right side
    1,438,747.80x = 2,972,418,568,727.58
  5. Step 5: Solve for x
    x = 2,972,418,568,727.58/1,438,747.80
  6. Step 6: Final answer
    x = 2,065,976.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.